Research Project
Grant-in-Aid for Challenging Exploratory Research
We screened the food factors that enhance the autophagic degradation leading to mitochondrial quality control. In HeLa cells, luteolin and the derivatives significantly enhanced the autophagic degradation of p62, an adaptor protein of autophagy. In contrast, in J774.1 macrophages, the mRNA expression of p62 was significantly enhanced upon treatment with flavonols such as quercetin, whereas no effects were observed upon treatment with luteolin derivatives. These results strongly suggest that the activities of polyphenols for autophagy induction are dependent on cell types. It was also found that p62 mRNA expression was enhanced through the activation of Nrf2, a transcription factor. Furthermore, the pretreatment of J774.1 with flavonols resulted in the decrease in both intracellular and extracellular IL-1beta, an autophagy substrate. These results suggest that autophagy induction by polyphenols might be good strategy for the quality control of intracellular proteins and organelles.
All 2013 2012 2011 Other
All Journal Article (14 results) (of which Peer Reviewed: 12 results, Open Access: 1 results) Presentation (15 results) (of which Invited: 2 results) Remarks (3 results)
PLoS One
Volume: 8 Issue: 11 Pages: e80843-e80843
10.1371/journal.pone.0080843
Volume: 8(3) Issue: 3 Pages: 1-15
10.1371/journal.pone.0058641
Science
Volume: 336 Issue: 6078 Pages: 225-228
10.1126/science.1218395
Food and Function
Volume: 3 Issue: 4 Pages: 389-398
10.1039/c2fo10224b
Free Radical Research
Volume: 46 Issue: 8 Pages: 1019-1028
10.3109/10715762.2012.673720
Chemical Research in Toxicology
Volume: 25 Issue: 7 Pages: 1392-1401
10.1021/tx300082u
Volume: 25 Issue: 7 Pages: 1384-1392
10.1021/tx3000818
Fertil Steril
Volume: 98 Issue: 2 Pages: 415-22
10.1016/j.fertnstert.2012.04.047
Nutrition
Volume: 27 Pages: 847-852
Journal of Pharmacological Sciences
Volume: 115 Pages: 466-470
10029893264
Free Radical Biology and Medicine
Volume: 51 Pages: 1329-1336
Environmental Health Perspectives
Volume: 120 Pages: 62-67
Bioscience, Biotechnology, and Biochemistry
Volume: 75 Pages: 609-617
10028271026
Volume: 2 Pages: 11-7
http://www.agr.nagoya-u.ac.jp/~food/
http://www.agr.nagoya-u.ac.jp/~food/index.html